I want to find a built in oven/grill to fit on my narrow-boat,size must be no bigger than 600mm high and 500mm

there is one on EBay used but looks in good order, trouble is it is a little taller than you want, take a look see what you think. good luck I will see what else is around as I live on our boat so I know what it's like getting things to fit to your liking.
follow the link below to look at the one on EBay
P.S. it's already on L.P.G. too